Decay-assisted collinear resonance ionization spectroscopy: Application to neutron-deficient francium

Abstract

This paper reports on the hyperfine-structure and radioactive-decay studies of the neutron-deficient francium isotopes ${}^{202-206}$Fr performed with the Collinear Resonance Ionization Spectroscopy (CRIS) experiment at the ISOLDE facility, CERN. The high resolution innate to collinear laser spectroscopy is combined with the high efficiency of ion detection to provide a highly-sensitive technique to probe the hyperfine structure of exotic isotopes. The technique of decay-assisted laser spectroscopy is presented, whereby the isomeric ion beam is deflected to a decay spectroscopy station for alpha-decay tagging of the hyperfine components. Here, we present the first hyperfine-structure measurements of the neutron-deficient francium isotopes ${}^{202-206}$Fr, in addition to the identification of the low-lying states of ${}^{202,204}$Fr performed at the CRIS experiment.

Accepted for publication with Physical Review X

References in corpus (2)

• Precision Atomic Physics Techniques for Nuclear Physics with Radioactive Beams
• Clock and Trigger Synchronization between Several Chassis of Digital Data Acquisition Modules

Cited by in corpus (5)

• Laser spectroscopy of francium isotopes at the borders of the region of reflection asymmetry
• Survey of hyperfine structure measurements in alkali atoms
• Laser spectroscopy of indium Rydberg atom bunches by electric field ionization
• Voltage scanning and technical upgrades at the Collinear Resonance Ionization Spectroscopy experiment
• Commissioning and Full Realization of the PLASEN System at BRIF